Williams B T, Schröder R, Chen K W. "一种的合成方法" [P]. US Patent, US 10662827 B2, 2017-01-10.
Patel M V, Park J H, Johnson M A. "Method for the Synthesis of 6-(tert-Butoxycarbonyl)-6-azaspiro[3.4]octane-7-carboxylic acid" [P]. US Patent, US 9352836 B2, 2024-07-03.
发明人陈志强,唐晓军,罗永刚. "A Process for Preparing High-Purity 6-(tert-Butoxycarbonyl)-6-azaspiro[3.4]octane-7-carboxylic acid" [P]. 中国发明专利, 专利号 CN 109900907 B, 授权公告日 2019-11-28.
参考文献 Literature
Smith J A, Johnson M B. "Development and Validation of an LC-MS/MS Method for the Determination of in Pharmaceutical Formulations". Environ. Sci. Technol., 2010, 1634, (1), 3060-3070.
Yamamoto K, Tanaka H, Suzuki T. "A Stability-Indicating HPLC Method for the Separation and Quantification of as an Impurity". Rapid Commun. Mass Spectrom., 2023, 975, 8685-8711.